Improvement in clamped molds for making- lead joints in pipe-connections



`- To all whom it may concern pipes while the pipes are being laid.

nient @wie EDWARD GWYN, or TIFF'IN, onro.

, Letters Patent No. 100,394, dated March 1, 187i).

. IMPROVENIET IN CLAMPED `MQLIDS FOR MAKINGLAD JOINTSINPIPE-CDNNECTIONS;

The Schedule referred to in these Letters Ratent end makng part ofthe'same,

Be it known that I, EDWARD Gwyn, of Tifin, in the county of Seneca, andState of Ohio,V have inveuteda new and useful Glampto be Used in RunningLead in Joints of Pipes; and I dohereby'declare' that the following is afull, clear, and exact descripy tion ofthe same, reference being had tothe accompanyingidrawings which form part Vof `this spccifcation.,l Thisinveutiouisdesigned for use on the joints, of

lts object is to provide for the better and more con;

` venieut closing of the mouth 'ofbell or the lead-cavity of thejoiutwhile the melted lead is bei-ng poured therein;` and It consists inau elastic packing-ring carried within a hinged or jointed collar,whereby the same, in being clasped around the pipe and against theuiouth or entrance of the cavity, may effect a. better and more cou-`venient closing of said cavity than is practicable with the ordinaryclay roll heretofore used for thatpur-v pose.

Referring to the accompanying drawings- Figure l represents a centralsection of a pipe-joint clamp-constructed according to my invention,ytaken in a direction lengthwise of the pipe;

Figure 2 represents a. face view of the same;'and

Figure 3, a profile or side viewthereoi'.

Similar letters of reference indicate correspondingparts in the severaldrawings.

A is au elastic packing-ring or circular pad, composed of India rubberor other suitable material, and

is secured byv rivets f f tothe inner surface of a jointed collar, B. f

This eoliar or clasp B is constructed of iron or other metal, is hingedor jointed at x, so as toadmit of vbeing opened or closed, and hasfitted, through cheeks b b, a thumb-screw, C, by which the hingedsections, when clasped around the pipe, are locked and tightened thereonpreparatory torclosing the joint, which is donc in the usual way by thepouring in of molten lead, an annular cavity or pocket for its receptionbeing left` between the two sections of pipe, as shown in red outlineaty. l

This apparatus in its operation is adjusted upon the pipe at or aboutthe point' usually occupied by the clay roll heretofore used for thepurpose, so that the face a of the elastic ring A will close or obstructthe opening of the lead cavity or annular pocket of the pipe-joint, saidface. a having a gate, c, for ingress of the molten lead, and being,also, beveled, if necessary, for electing a better and closer jointbetween it and the end of the opposite section of pipe,- and also toleave a portion of the lead projecting for calking.

What is here claimed, and desired to be secured by Letters Patent, isl'lhe combination of the elastic ring A and the jointed collar B,substantially as and for the purpose herein described.

EDWARD GWYN. Witnesses' G. I. KEER, I. Gwynn.

